The Collaborative International Dictionary of English v.0.48:

Ancientry \An"cient*ry\, n.
   1. Antiquity; what is ancient.
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            They contain not word of ancientry.   --West.
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   2. Old age; also, old people. [R.]
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            Wronging the ancientry.               --Shak.
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   3. Ancient lineage; ancestry; dignity of birth.
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            A gentleman of more ancientry than estate. --Fuller.
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